Receiving and selectively transmitting frequency hopped data signals using a plurality of antennas

Abstract

A remote unit transmits data by Frequency hopping over a set of frequencies to a base station. A plurality of antennas at the base station receives the transmitted frequency hopped data. An optimal combining of each antenna's received hopped data for a particular frequency is determined. Data is selectively transmitted using the plurality of antennas from the base station to the remote unit over the particular frequency. The selectively transmitting is selected using the optimal combining.

1. A method for use in a frequency hopping code division multiple access communication system, the method comprising:
 transmitting data by frequency hopping over a set of frequencies from a remote unit to a base station; 
 providing a plurality of antennas at a base station for receiving the transmitted frequency hopped data, wherein each of the plurality of antennas corresponds to a unique geographic sector of the base station; 
 determining an optimal combining of each antenna's received hopped data for a particular frequency; and 
 selectively transmitting data using at least one of the plurality of antennas from the base station to the remote unit over the particular frequency, the selective transmitting selected using the optimal combining. 
 
   
   
     2. The method of  claim 1  wherein the selectively transmitting selects an antenna for transmission having a highest received power of the received hopped data. 
   
   
     3. The method of  claim 2  wherein the plurality of antennas is two antennas. 
   
   
     4. A frequency hopping base station comprising:
 a plurality of antennas for receiving a frequency hopped data signal for a particular user, the frequency hopped data signal is hopped over a set of frequencies, wherein each of the plurality of antennas corresponds to a unique geographic sector of the coverage area; 
 means for determining an optimal combining of each antenna's received version of the frequency hopped data signal for a particular frequency of the set of frequencies; and 
 means for selectively transmitting data using the plurality of antennas to the particular user over the particular frequency, the selectively transmitting selected using the optimal combining. 
 
   
   
     5. The base station of  claim 4  wherein the selectively transmitting selects an antenna for transmission having a highest received power of the received hopped signal. 
   
   
     6. The base station of  claim 5  wherein the plurality of antennas is two antennas.